Lexmark X642E, Service Manual, Page: 193 / 525

Diagnostic information
2-155
7002-xxx
Options service check
Service tip: When you have a problem with any of the options installed in the options slots on the system board,
switch the non operating option to one of the other option slots to isolate the failure.
Flash memory option(s)
Run a copy of the test page and check to see if the option you are checking is listed. The printer does not
recognize the option being installed if the option is not listed. Make sure the memory card is installed correctly
and is not broken or damaged. If the memory card is correctly installed and not broken or damaged then run the
“Flash Test” on page 3-17 . If the test fails, replace the Flash card. If the problem continues, replace the
controller board.
DRAM memory option(s)
This service check is the same as the flash memory option service check with the following exception:
Run the “DRAM Test” on page 3-9 from the menu if the SDRAM Memory card is correctly installed and not
broken or damaged. If the test fails, replace the SDRAM card. If the problem continues, replace the controller
board.
Hard disk option
Service tip: Model X646e supports one hard disk option. Make sure only one hard disk option is installed.
Make sure the fixed disk and the fixed disk board are correctly installed. Run the “Quick Disk Test” on
page 3-16 from the Device Test on the Diagnostics menu when a problem is suspected either with the hard disk
system board or with the hard disk.
Note: The Quick Disk Test is a non-destructive test and indicates Pass or Fail. If the test fails, replace the hard
disk. If a problem still exists, replace the hard disk board.
The “Disk Test/Clean” on page 3-16 is used to help restore the disk if the disk contains bad data and is
unusable. This test is divided into a cleaning and a verifying or testing section.
Warning: This can be a very lengthy test depending on the disk size. This test leaves the hard disk
unformatted. The servicer or user must reformat the disk using the Format Disk Menu operation.
This is a destructive type of test. All the data on the disk is destroyed and should not be performed
on a known good disk.
Error Code 976.xx - Network Card x (x=Network card 1, 2, or 3)
A 976 error code indicates an unrecoverable software error in network card x. Verify that network card x is
correctly installed in the socket on the interconnect card and is properly grounded. If you find no problem,
contact your next level of support before replacing the network card.
Error Code 977.xx - Network Card x
A 977 error displays when the RIP software detects that a network card is installed in slot x on the interconnect
card but cannot establish communications with the network card.